2018年5月1日
Spin and charge controlled by antisymmetric spin-orbit coupling in a triangular-triple-quantum-dot Kondo system
Physica B: Condensed Matter
- ,
- ,
- 巻
- 536
- 号
- 開始ページ
- 226
- 終了ページ
- 229
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.physb.2017.08.033
- 出版者・発行元
- Elsevier B.V.
We study a local antisymmetric spin-orbit (ASO) coupling effect on a triangular-triple-quantum-dot (TTQD) system as a theoretical proposal for a new application of the Kondo physics to nanoscale devices. The electric polarization induced by the Kondo effect is strongly correlated with the spin configurations and molecular orbital degrees of freedom in the TTQD. In particular, an abrupt sign reversal of the emergent electric polarization is associated with a quantum critical point in a magnetic field, which can also be controlled by the ASO coupling that changes the mixing weight of different orbital components in the TTQD ground state.
- ID情報
-
- DOI : 10.1016/j.physb.2017.08.033
- ISSN : 0921-4526
- SCOPUS ID : 85027691602